1st post all photos : Why all ISO 1000 in bright day light ?

2nd post : don't need ISO 640 as well. Look at the shutter speed. 1/4000. You can reduce the ISO to 200 as well.

3rd post looks fine for me but not portrait post.

Most portrait background looks messy.

My advice is u need to pay more attention to the composition. Try to move around to choose a better point of view.

For example pic#3, just slightly move to the side to avoid the 'antenna' coming out from the model's head, and your shadow casted on the leg part.

Pic#30 is a good shot

8. 10. 12. 17. wrong focus. =/

I think he meant out of focus or you're not focusing on the model but the background. 

wat camera do u use to take all this photos?

since you requested, i come liao. no say i don't come ahhh.

#1 - N/A
#2 - #3 - wheeee, holiday photo.
#4 - over-exposed, lack of compo
#5 - #6 under-exposed holiday photo.........

(at this point, i think you should cut down posting photos that are almost the same)
#7 - #8  - wheeee, holiday photo.
#9 - got potential.
#10 holiday photo again
#11 - got potential. can be used as postcard actually. Try shooting in the morning or evening.
#12 - #14 holiday photo again
#15 - nice, just level the horizon a bit
#16 - nice also.
#17 - holiday photo again
#18 - good concept there. you're heading somewhere (like the footprints) but still donno where yet.
#19 - #20 - ehh I thought I saw those earlier. i scroll up, yeah it's like #15. They're triplets.
#21 is nice but........ it's #22 with alternate angle.
#23 - too bad the details are gone around the ship.
#24 - this one i quite like.
#25 - looks ok. ugly frame. ever considered doing it portrait instead of landscape?
#26 - idea is there. good try
#27 - looks nice. ugly frame only. haha
#28 - nice. Wish you've cover the front of the ships.
#29 - nothing there.
#30 - i like, kick the motobike away next time. j/k